This $62 million dollar temple was erected to house one little dental fragment of religious history.

This micro-nation may be some sort of prank, but its constitution sure seems official.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

A black cat protests the City Guild in Riga's Old Town.

Flamboyant architecture from the turn of 20th century.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

Fortified medieval tower house with lovely roof garden.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

A diverse collection of wax, bone, papier-maché and mummified relics.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.

This ancient theater was once the home of fierce gladiatorial battles.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

There has been an astronomical clock on this spot since the 14th century.

The encased skull that is widely believed to belong to St. John the Baptist.

Historic medieval fortified city in southwest France.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The celebrated eyesore created by starry-eyed sweethearts.